511241023651 has 2 divisors, whose sum is σ = 511241023652. Its totient is φ = 511241023650.

The previous prime is 511241023609. The next prime is 511241023669. The reversal of 511241023651 is 156320142115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 511241023651 - 2¹³ = 511241015459 is a prime.

It is a super-2 number, since 2×511241023651² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511241023691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255620511825 + 255620511826.

It is an arithmetic number, because the mean of its divisors is an integer number (255620511826).

Almost surely, 2^511241023651 is an apocalyptic number.

511241023651 is a deficient number, since it is larger than the sum of its proper divisors (1).

511241023651 is an equidigital number, since it uses as much as digits as its factorization.

511241023651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 511241023651 its reverse (156320142115), we get a palindrome (667561165766).

The spelling of 511241023651 in words is "five hundred eleven billion, two hundred forty-one million, twenty-three thousand, six hundred fifty-one".